Comparative study of the density matrix embedding theory for Hubbard models

We examine the performance of the density matrix embedding theory (DMET) recently proposed in Knizia and Chan [Phys. Rev. Lett. 109, 186404 (2012)]. The core of this method is to find a proper one-body potential that generates a good trial wave function for projecting a large-scale original Hamilton...

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Veröffentlicht in:	Physical review. B 2020-12, Vol.102 (23), p.1, Article 235111
Hauptverfasser:	Kawano, Masataka, Hotta, Chisa
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Broken symmetry Chains Comparative studies Cost function Density Embedding Entanglement Ground state Occupancy Subsystems Symmetry Wave functions
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